PostEaseBe specific instead of vague or clickbait
A title that overpromises can earn short-term clicks, but the resulting low retention once viewers realize the video does not deliver hurts the video's standing in the recommendation system more than the extra clicks help it. A specific, honest title that still creates real curiosity tends to perform better over the full life of a video.
Front-load the description's first two lines
Only the first line or two of a description show before a viewer has to expand it, so the most useful, specific summary of the video should be there. Not a channel intro or a list of links; those can go further down.
Match the title to what the thumbnail already promises
A title and thumbnail that promise 2 different things create confusion rather than curiosity. The two should work together, each adding something the other does not: the thumbnail showing, the title explaining, or the reverse.